A5082534009- Biocrusts and Microbial Ecology
- Microbial Community Ecology and Physiology
- Aquatic Ecosystems and Phytoplankton Dynamics
- Polar Research and Ecology
- Soil Carbon and Nitrogen Dynamics
- Slime Mold and Myxomycetes Research
- Genomics and Phylogenetic Studies
- Climate change and permafrost
- Aeolian processes and effects
- Cassava research and cyanide
- Plant and Biological Electrophysiology Studies
- Bioenergy crop production and management
- Allelopathy and phytotoxic interactions
- Plant Water Relations and Carbon Dynamics
- Spaceflight effects on biology
- Insect and Arachnid Ecology and Behavior
- Constructed Wetlands for Wastewater Treatment
- Coastal wetland ecosystem dynamics
- Methane Hydrates and Related Phenomena
- Marine and environmental studies
- Soil erosion and sediment transport
- Invertebrate Taxonomy and Ecology
- Nematode management and characterization studies
- Geology and Paleoclimatology Research
- Cryospheric studies and observations
University of Colorado Boulder
2022-2025
Cooperative Institute for Research in Environmental Sciences
2025
University of Colorado System
2023
Ben-Gurion University of the Negev
2019-2022
UiT The Arctic University of Norway
2019
Geosmin is a volatile organic compound (VOC) produced by range of different soil microorganisms, and most commonly recognized for its characteristic "earthy" scent evident after rainfall. Though it remains unclear why microorganisms produce geosmin, we know that exposure to geosmin can influence behaviors across wide organisms, serving as both an attractant repellant, but effects on protists remain largely unstudied. We investigated how respond exposures, focusing representatives three...
Duckweeds (Lemnaceae) are tiny plants that float on aquatic surfaces and typically isolated from temperate equatorial regions. Yet, duckweed diversity in Mediterranean arid regions has been seldom explored. To address this gap knowledge, we surveyed Israel, an ecological junction between climates. We searched for duckweeds the north center of Israel surface streams, ponds waterholes. collected 27 characterized their morphology, molecular barcodes (atpF-atpH psbK-psbI) biochemical features...
Abstract. Rain events in arid environments are highly unpredictable, interspersing extended periods of drought. Therefore, tracking changes desert soil bacterial communities during hydration-desiccation cycles the field, was seldom attempted. Here, we assessed rain-mediated dynamics active community Negev Desert biological crust (biocrust), and evaluated composition, potential function, photosynthetic activity, extracellular polysaccharide (EPS) production. We predicted that increased...
Abstract. Ecosystem engineers (EEs) are present in every environment and known to strongly influence ecological processes thus shape the distribution of species resources. In this study, we assessed direct indirect effect two EEs (perennial shrubs ant nests), individually combined, on composition function arid soil bacterial communities. To that end, topsoil samples were collected Negev desert highlands during dry season from four patch types: (1) barren soil; (2) under shrubs; (3) near...
Plant-herbivore relationships are important for the functioning of tundra ecosystems. Here, we report first results from an exclosure experiment that, something very few studies have done, separated impact three sizes herbivores (small, medium and large) on nine functional groups plants in low arctic Yamal Peninsula (Russia). Herbivore faeces counts exclosures pictures automatic cameras proved that experimental setup worked. The majority plant did not respond to exclusion herbivores,...
ABSTRACT Rain events in arid environments are highly unpredictable, interspersing extended periods of drought. Therefore, following changes desert soil bacterial communities during hydration-desiccation cycles the field, was seldom attempted. Here, we assessed rain-mediated dynamics active community Negev Desert biological crust (biocrust), and evaluated composition, potential function, photosynthetic activity. We predicted that increased biocrust moisture would resuscitate phototrophs,...
Abstract Rain events in arid environments are highly unpredictable and intersperse extended periods of drought. Therefore, tracking changes desert soil bacterial communities during rain events, the field was seldom attempted. Here, we assessed rain-mediated dynamics active Negev Desert biological crust (biocrust). Biocrust samples were collected before, during, after a heavy rainfall; evaluated composition, potential function, photosynthetic activity, extracellular polysaccharides (EPS)...
Geosmin — the earthy smell of rain is an important volatile organic compound produced by microorganisms in many environments. emission readily recognized after rain, especially first heavy rainfall a long drought. Even with geosmin’s ubiquity, very few studies have investigated production geosmin soil, while aquatic environments been heavily explored. Here, we studied emissions and its potential microbial producers desert soil explored conditions that affected production. We collected intact...
ABSTRACT Ecosystem engineers (EEs) are present in every environment and known to strongly influence ecological processes thus shape the distribution of species resources. In this study, we assessed direct indirect effect two EEs (perennial shrubs ant nests), individually combined, on composition function arid soil bacterial communities. To that end, top samples were collected Negev Desert Highlands during dry season from four patch types: (1) barren soil; (2) under shrubs; (3) near nests; or...
Abstract. Ecosystem engineers (EEs) are present in every environment and known to strongly influence ecological processes thus shape the distribution of species resources. In this study, we assessed direct indirect effect two EEs (perennial shrubs ant nests), individually combined, on composition function arid soil bacterial communities. To that end, topsoil samples were collected Negev Desert Highlands during dry season from four patch types: (1) barren soil; (2) under shrubs; (3) near...